Theorie-Palaver

July 6, 2021 at 2:30 p.m. only via Zoom

Upalaparna Banerjee

Federico Gasparotto

Pouria Mazloumi

Yong Xu

Self-Organised Localisation
Tevong You (CERN)


We describe a new phenomenon in quantum cosmology: self-organised localisation. When the fundamental parameters of a theory are functions of a scalar field subject to large fluctuations during inflation, quantum phase transitions can act as dynamical attractors. As a result, the theory parameters are probabilistically localised around the critical value and the Universe finds itself at the edge of a phase transition. We illustrate how self-organised localisation could account for the observed near-criticality of the Higgs self-coupling, the naturalness of the Higgs mass, or the smallness of the cosmological constant.


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